Device for manufacturing radially-corrugated sheet-metal disks



Jan. 2, 1923. 1,440,709. A n A .y y w. A. vxNsoN.

DEVICE FOR MANUFACTURING RADIALLY CORRUGATED SHEET METAL DISK'S.

ORIGINAL FILED IAN. 23,1917. 3 SHEETS-SHEET l.

. 4,Z64 zr ATTORNEY Jan. 2, 1923. 5 1,440,709.

. .W. A. VINSON.

DEVICE FORMANUFACTURING RADIALLY CORHUGATED SHEET METAL DlKS.

- oRlGlNAL FILED JAN. 23. 1917. 3 SHEETS-SHEET 2.

" I INVENTOR ATTORNEY w. A.' vlNsoN.

J an. 2, 1923.

ORIGINAL FILED IAN. 23, 1917. 3 SHEETS-SHEET 3.

INVENTOR v WITNEssEs ATTORNEY Patented Jan. 2, 1923.

e, irre WILLIAM A. VINsoiiLor Blinrrirnn, A"lvi'ziirfitre"'un-i'" i nnyon Jrorv 'MANUFACTUMNG'vnnnmmmoounuenrnn -fsiinnfriiirnrnn linsite y Tol/1U wiof/n'e't may concer/a.: f

it known that I, NILILIAM A. VINsoN,v a citizen of the United States, reSidinfg-at- Baltimore, in the county of BaltimoreCityv and State off Maryland, have invented 'new` and useful lmproyements #in Deyiees torrum `ions or indented ribs extending trom' the center to the periphery o'fthe disk, wherein the convolutions forming" therors rugations are substantially of *the same depth throliigliout.

in the manufacture of radiallyl corrugated disks et' this characterdifficulties are encountered in 'forming' the eorrugations, owing' to the tact that a disk Witha central opening' and primarily' of excess diameter nmst be employed. Jfor the reason `thatiin the 'formation ot" the corrugationsfthe -disk is contracted radially andcircumterentia-lly, the (,ompleted eorrugatee diskbeing owing-` to the displacements ot the metal forming the mrrue'ations,` oi? much less 'diameter' than the ordinary disk or blank from which'A it is made. ln making corrugated disks' of this character with corrugations'ithasheretoiore been found impossible to make the disk in a single operationeor'to'stamp more than a single corrugation 'at afftime,v owing o tact that under previous methods and ous devices it Lhad been iionndnim-f sible to obtain a stamping action per ini'tting ot' the formation of all ofthe con' rug-ations simultaneously, dueto theimpossibility ot securing proper shrinkage .or contraction oi" the disk during the stamping` operation.y 'lt has therefore been Efound nee` ess ry Y'ith previous methods andepparatus to construct the disk by 'forming the 'corrue'ations successively by different operai tions. 'which modeof manufacture vhas Vserious detects in that making a' single cor-ru-' gation et a time n'arps `the material into an irregular cone,:tliereby tsetting upn1ore-or^f55 less-permanent distortions and .irregular-v, itiesysyhereby the corrugations arefdiyerted 'from true ra y :lines and n disk 'of'oblong instead.' of circula/r f termy pro ducedggwhielixir#I regular-ities Leannnot be Wholly corrected by'eo the customary process of using finishing dies7 the result-being that fa'ri'orm of disk is produced 'Whichfvis inaccurate vmdrineapable ot'being fittedftoa hub Fand rim a quick and -aceu'rate*ina-nner.V v

- llt is found also that'` when corrulgations are formed in rolled "sheets yof inetalgfthe material either-stretclies Aor fshortens ingive-n places, yaccOrding-2jtoit'he idirection'ef 70 thef eorruga'tions asV regards tthegigrain of' the rolled metal7 which in the processesiofg; manufact-ure' heretofore 'employed' causes the production Aola disk 'of elliptical termi,

which `is elongated laterally to the grain '75 mele `member 4or punch' isY` objectionable lin 80 that `the-.metal isV dragged voi-.ierV :'th'e veorners 1 of'the 'Female die, whereby the metal isl {irst kinked over kithe eornersf "and" then straightened out-into thelat'ei'al Wallsof' the corr,ligation,I causinginjuryto'the' ymetal `85 and'wear upon the diesx'and yalso undue* stretching ofvthe lat-eral /Walls off thev cor rugation ywhen-the ymetal ishelfdimore or less 'firmly 'by the dies;4 softhatv 'a disksio't more or lless varia-nce in thickness and wreak-90 atene' or more points is produced: f i," l

In the' use 'of--"s'u'ch'l dies and punches-the portiono2 th'einetalI which 'isto form the bottom'ofthe corrugationisy caused to bulge ahead 'of the male `member"otflthe95 die until itstrikes the bottom of the 'forming` cavity inthe female member,atv'which'i' time the metal slips-back aroundthecor-- nersof'the male member o'fthe "diein oid'er toi form partlof the lateral 4 Wall-'sof the 100 corrugation. -lThfe I'result vis' thatlwhen 'the' metalbecomes more or 'lessiirmly heldby" the dies "as the corrugati'on 'nearsfcomplel tion the bulging' metal is either"compressed or is buckled into radialcreases, whieh'ar'e 105 not only detrnnen'tallto the strength of the disk `and reduces the circumference ofthe disk, fwhi'le' 'tendling to distort it into a" telly `WithoutLtrouble ,-andfdiflicuhy ior; iny 65 to provide a construction of dies, and modev of manufacture, whereby all of the corrugations may be simultaneously produced,` thus eliminating a number of steps and a material amount of labor and time, with the result of 'producing a corrugated disk at much less cost. i

f A furtherl object of the invention is to provide an apparatus, and mode of manufacture, wherebyV disks of geometrica-Hy symmetrical formmay be produced without the necessity of employing finishing dies,

A still further object of the invention is to provide an apparatus, and method of operation, whereby the corrugations may be formed simultaneously in a novel and prescribed manner, to secure the aforesaid results.

p A still further object of the invention is to provide an apparatus, and method of manufacture, whereby all slipping of the metal over the corners of the forming teeth of the dies, all stretching of the metal in the lateral walls of the corrugations, and all compression or buckling of the bottom walls of the corrugations during the process of formation will lbe reduced to the minimum, and a corrugated disk of true form and maximum strength, durability and resiliency will be produced.

A still further object of the invention is to provide an apparatus, and mode of manufacture, whereby an improved constructiion'of disk may be produced having' corrugations the ribs of which are of differentv width from the grooves, so that two or more of the disks may be assembled into the same wheel and lie in contact with each other, to produce a multiple-disked wheel of sufliciently great strength and durability for use in heavy truck or car wheels.

A still further object of the invention is to provide an apparatus, and method of manufactura'whereby disks of the character described may be rapidly and conveniently formed through the action of an ordinary punch press, thus enabling disks to be produced in greater quantities at a much lower cost than has been possible with the constructions and methods of manufacture fheretofore in use.

With these and other objects in view the invention consists of the features of con'- struction, combination and arrangement of hereinafter and parts fully described claimed, reference being had to the accomsection of a number of the dies, showing the same in relative position when the device is open ready to receive a disk to be corrugated.

Figure 3 is a similar view showing a disk fitted in position between the dies, in readiness for the stamping operation.

Figure l is a similar view showing the stamping operation partially completed.

Figure 5 is a similarview showing the final step in the stamping` operation.

Figure 6 is a fragmentary plan view showing the dies in the position they assume at the completion of the stamping operation.

Figure 7 is a sectional elevation of a complete apparatus embodying my invention, as employed in a press, such as a hydraulic press.

Figure 8 device.

Figure 9 is a view of the dies of Figure in closed position.

Figure 10 is a view similar to Figure 9 showing a modified forni of construction.

Figure 1l is a view similar to Figure 5, illustrating the inodilied form of dies for producing the modified form of disk.

Figure l2 is a peripheral projection showing` two such disks assembled.

Figure 13 is a similar view showing the assemblage of more than two disks to form a wheel of maximum strength and durability, such as a railway car wheel.

Figures 14- to 19 are views showing in detail the construction of parts of the apparatus.

0n a suitablel assembling plate l are arranged suitable supports or mounting members 2. These mounting members in this particular construction are assembled in such a way and are so shaped as to form an isosceles concave pyramid having the vertex at the center of the assembling plate to which the mountings are secured by bolts or other means 3. It is generally preferable to have all these mountings of the same central angle. ln the upper surface of each of these mounting members is milled a rT-slot et in such a position that it bisects the central angle of the inclined surface.

l On each of the said mounting members is fitted a die or jaw 5 with a slot in its bottom to receive a guide 6, and is slidably fitted to the guide and mounting with the guide bisecting the central angle of its base,

is a detail view of a tensioning members and of the dies which meet the ad` jacent mounting member or die respectively are, herein called ythe planes or' separation, and should be perpendicular to the assembling plate and to the top of the dies.

On one side of each ot the dies is arranged a guide postS perpendicular to the plane of separation, consequently parallel to the assembling plate and the `tops 4ot the teeth and dies. Eachof these guide posts extends into a hole 9 in the adjacent die which is also perpendicular to the plane yoi' segregation and parallel to the tops ofthe teeth and dies and to the assembling plate. Each plane of separation on the dies is thus crossed by a guide post which holds the f points of all of the dies at equal distance :from the center and they slide in and out according as the dies move toward or trom the center respectively. rllhey act to prevent any one or more of the dies trom having any radial motion without all oit then'iA being moved radially the same distance at the saine time synchronously.

0n the outer end and on each of the mounting, members is a suitable bracket or ears 10 to receive a roller 1l mounted therein. A chain or other 'flexible part 12 is attached at one end to the outer end oi. each of the dies and passes over the roller and to the other end is attached a weight or spring or other means 13, Whereby the dies are drawn radially up the in#` clined surface of the mounting` member until the outer ends ot the dies come against adjustment blocks 14 suitably termed and placed so that all of the dies are stopped byand rest aoainst them. The i for the e .li

purpose ot limiting' the amount oit opening or radial drawing that'the Weights or springs 13 impart to the dies. set to any desired distance 'from the center within the radial capacity 'of the mountingr members. The deeper the coirug ition that the device is to make the greater is the radial motion ol the teethand dies hence the necessity for this adjustment.

Il small portion l5 oit the central end ci the teeth should be of the samefcentral angle as the die and should extend a short distance above the top or" the tooth to a luc; for preventing; the metal from slip` r 1 ping on the teeth radially toward tue center..

the upper part ot l These blocks may be during the :folding of the'iiietal.` These lugs are for the further purpose ot giving resistance to the draw'oiv the weights or springs 13 so as to lreepthe metal under a radialftensionl, taut7 and by increasing or decreasing the weights or strength oi? the springs themetal may beheld suitably taut so as to prevent stretching oi' the .metal asl `well as to pre vent .it trom bulging ahead of vthe middle portion o', the teeth to suoli an extent 'that theteetli and dies would stretch the lateral walls ot` the corrugations or compress' or.

buckle the metal, as shown in and explained with reference to Figures 7 and 8 respec tively. rillhese points of stretchingand buck ling are indicated by the letters (s) and tbl respectively.. lll] here thick strong` inetalis being pressed the device may at times show aftencle'ncy' .to let the dies and teeth yslide ahead y ot the` metal` radia ly Yprovided the weights or the. strength ot the springsv 13 are not gsu'liicient to hold them. To prevent such an accidental'slippingi suitable lugs or pins 16 are provided which engage the pe riphery oic the disk and insure that. thedisk and the forming teeth shall move together.

At the corners of the mounting members i 'i a small recess 17 may be necessary to .allow for the adjustment block on the upper parts oli' the device when it is closed closely inthe operation.`

ln the 1bottom or all ot thelovver .dies

near the central point is milled a nitch 'it suoli that when the dies are closed they are all caught by a suitable circular latch 18..

them in va central position when they close.` This is ttor the purpose ot allowing the upper dies oi the forming device to raise and allow the operator to remove lthe'co-rrugated disk without the lower dies tending to open and `hold or distort the disk. i lllhen the disk is removed the operator may release the latch by depressing;` the levcr`20-21 'and the weightsy lwill open the lower dies.

Figures 11 and 12 show t is latch so hold.- inathe dies centrally.

lThe upper portion ot this device comprises an asseinblingplate on which are secured mount' c; .members 2e all of which 'l'orin an inif'erted concave pyramiththe vertex ot which lies ina line j )erpendicular `to theassembling' plate'l at the vertex oit they lower concave .pyi'unii d attached to These members 36 are et the same/.number as llO member 2G sects the central angle. This slot is tore-y the mounting members 2 and should be of the same central angle7 and the assembling plate upon ywhich they are mounted should be kept by the press parallel to the assembling` plate `l.

ln the lower or inclined surface of each is milled a T -slot which biceive a channeled guide .27 slidably fitted into a similar slot in the upper surface oa die 28 similar in general to the previously mentioned dies 5.. These upper dies slide toward the periphery of their own weight. All or" these dies 28 are machined oit on their lower surface so that they are in approximately the same plane and parallel to the assembling plate 25. ln the side of each. of these upper dies is secured a guide post 8 and in the adj acentdie hole 9 both of which are perpendicular to the plane of separation exactly similar to these of the lower dies and operate in asimilar way to insure the synchronous radial motion oi all o'f'the dies.

To each otthese upper dies is attached asuitable tooth 297 all of which are the same height and extend radially with the bisector ot its central angle in the same plane as the bisector of the central anele oft-the jaw on whichI it is mounted, and of such a central angle that the sum of the central angles ot one upper tooth and one lower tooth is equal to the central angle of one die. The point of cachupper tooth and a small portion of the die is removed to receive the lugs l5 on the lower teeth.

The channel shaped guides in the inclined surface of the upper dies allows the dies to move radially and be supported by the T- guides which is also used as a means of holding the adjustment blocks `30 which are adjusted by means ot screws 3l and fastened by bolts 32 similar to the adjustment and fastening of the blocks 14C.

The upper and lower assembling plates are secured in a suitable pressing device, the

lower assembling plate being secured to the bed B and the upper assembling plate to the moving part m of the press. The guides 33 of the press ensures a proper meeting of both assemblages ot dies, etc.

The upper and lower dies are secured in the press in such a position that'the upper teeth and the lower teeth alternate, the planes of the sides of each tooth being parallel to the plane of the side oit the adjacent tooth in every instance around the whole set. This is accomplished by lit-ting the teeth together and then bringing the moving part of the press down onto the upper assemblage plate and fastening it thereto while the jaws are closed7 as shown in Figures 1l. vand l2. Tn this position the planes ot separation of the lower kdies bisect the Vupper dies and the planes of separation oi the upper dies bisect the lower dies?v consequently all the planes of separation terminate inthe bisection of a toothl on the opposite set of dies.

The planes which divide the intermeshing upper and lower teeth are herein called theV planes of foldin'gand are marked (PF) and the planes of separation are marked On all the lower dies at equal distances` pendicular to the plane of folding of the tooth. Thus on either side of the bisector 01"' the jaw extends this upwardly extending` tongue. Tt should extend upwardly a short distance above the top of the highest teeth that are to be used on the dies.

@n each upper. jaw isformed downwardly projecting ribs or tongues 35, the space between thembeing so formed and locatedas to receive the tongue 34 on the lower die. This groove on each die is also an equal distance from the center as measured similar to the above mentioned tongue and its. interior walls are milled perpendicular to the base of the assembly plate and tothe planes of tolding where the central angle of the Vtooth is equal to one-halt of the cent-ral angle ot the die in this instance. Thus as the dies close and move in a radial direction the tongue 34 slides in the groove 35 and the grooved guide slides in the opposite direction upon the corrugated disk. lVhen the device opens to allow the Finished disk to'V be removed the grooved guides raise vertically oft the tongue and the upper dies slide open as they raise.

These tongue and grooved guides are for the purpose ot preventing the upper or lower set of dies and teeth from moving radially taster'or slower than the other set or than the metal ot the disk and prevents any o1c the dies or teeth from moving in any other way than that which carries the metal of the disk straight to where it belongs without slipping on thel teeth.` Figures 9 and 10 show the fitting ot the tongue and groove guides as they lit when the device is' closed. These three guides in conjunction with those which cross the planes of separation insure the synchronous radial motion of all of the segmentsof a segregated folding device.

Tn Figure 8 is shown a form of roller which is composed ot two members 36 and 37 respectively, a square portion 38 on the part 36 is iitted into a slot 39 in the part 37 so that the part 37 may be made to run eccentric with regard to the shaft i0 on which the part 36 is axially mounted. A nut 4l threaded to the part 36 holds the part 37 in any desired position orn adjustment. Each weight or spring 13 is attached to the cord or chain 42 which is attached to the part 37 and thus made to erert a dilierent amount different depth of radial tension on lthe metalat different stages of the corrugation. if'so desired, since it requires less radial tensiones the folding nearscompletion. n

Figure l0 shows how the mounting niembers may be provided with rockers lt,.in stead of the inclined surfaces` and which may be snugly but movably fitted into suitable retaining bearing parts and made to' hold the dies in their proper plane of` motionl previously dei-,cribed.V Either the upper or lower dies ma)- be so mounted or bothsince the tting of the teeth guides, etc., are the same. ln this fornrof mounting. the mounting member itself may be shifted radially to adjust the device for making corrugat-ions of Which krequire greater or less motion according to the greater or less depth of corrugation', respectively. The outer ends ofthedies may rest against the brackets e3v when opened Which serve the saine purpose as the blocks ll, v In Figure ll, le is the periphery of a disl formed by meansrof teeth. 45 ofthe upper dies being of a different central angle, in this instance smaller, than the teeth i6 of the lower-dies.y Figure 12 is a peripheral projection of two such disks i7 Vand i8 respectively assembled into the saine wheel, the small corrugations ofleachfvdiski jutting between the small cori-ligation of the other.Y

thus producing a Wheel of superior strength and resilience; Figure ll may be taken to represent also the peripheral.projections in sectionV of a disk and the device Where the disk is corrugated with the upper teeth being displaced toward the periphery and-the teeth of the lower jaws displaced centrally, but both the-teeth of the upper jaws andthe teeth of the lower ja'vvs being of the same Vcentral angle, thus making` the grooves of one side of the disk ivi der than the ribs.

Figuiie 131s a peripheral proliection of three disks fitted together to be assembled into one wheel, This fitting is done by the above mentioned radial ldisplacement of the teeth. Vil-here an oddv number'of disks are assembled into this Way the middle one nui-y have its coi'rngations of equal Width and angular n'ieasuren'lents, but not essentially so,` Other disks may be so tted to this inultiple'disk by the "irther' dial displacement-fof' the tee "Iso to produce a wheel of any desired .strength'andvyet' have a certain degree of ref-i-; ilience.y` Car wheels of great strength may be builtwnp in this way andstill be light as'compared to those now in use and at a much less cost in the long run.

l/Vhere the teeth of the upper and lower dies are of different central angles they also may be radially displaced as previously described and be made to produce disks to fit those already made With similar corrugations.

`'series ofv dies l claim .f-

l. .ln a device of thc class described, a series of dies, means for mountingthe dies and permitting` movement each inthe directionv of its longitudinal axis toward and .from a common center, the dies maintaining a horizontal position, a movable head, and means carried thereby cooperating with the dies, the Workingfa'ces of the dies having.` converging edge portions.

2t In a' device of the class described, a

yseries of dies, means for mounting the dies,

and permitting movement each in the direction of .its longitudinal axis toward and from a common center the dies maintaining a horizontal position, a movable head, and aV series of dies carried bythe head, the

Workingl faces of the vdies having converging edge portions.

3. ln'y a device of the class described, a seines'` of dies, meansfor mounting the dies an'dlperinitting movement each in the direct-ion of its longitudinal axis. towardr and n series -of dies'radiating from a common center` and movable each inv th'evdirect'ionl of its longitudinal axis towardfandgfrom the center,fth`e dies maintaining! a" horizontal position; said dies having tapering faces, and a second series of dies, the dies of the series lastnamed alternating' inI position with those ofthe vseries first named, the Working vfaces .of the dies having converging edge portions. y

In a device of the class described, a series of, dies movable each inthe direction of its longitudinal axis toward and 'from a'- common center, the dies maintaining a horizontalposition, a-second-series of dies similarly movable, the dies of the second Aseries yalternatingwith those of the series first named, the workingfaces 'of the dies having converging edge portions.

In a device of the Class described c vovable each in the direction offitslongi nal iis toward from' a cento-, the dies inW taining horiaontal position, a second series of dies simile ly movable, the dies of the sceondseries alternating with. those of the .first series,- and allI of the dies having tai'iering faces, the Working faces of the dies-having converging edge portions.

7. In a device of the class described. a series of dies movable each in the direction of its longitudinal aXis toward and from a center, the dies maintaining a horizontal position, means for holding the dies norllO mally spaced from the center, and. a series oli dies cooperatmg with those first named, the working faces of the dies having converging edge portions.

S. ln a device of the class described, a series of dies movable each in the direction of its longitudinal anis toward and from a center, the dies maintaining a horizontal position, means for holding the dies normally spaced from the center, a series of dies cooperating with those first named, and mounting means for the cooperating dies permitting movement thereof away from a common center to an inoperative position, the Working faces of the dies hav ing converging edge portions.

9. ln a device of the class described, a series of dies and means for mounting the dies permitting movement each in the direction of its longitudinal axis, When under pressure from above, toivarda common center, the dies maintaining a horizontal position, and a second series of dies cooperating with those first named, the Working faces of the dies having converging edge portions.

10. ln a device of the class described, a series of dies and means for mounting the dies permitting move-ment when under pressure from above, toward common center the dies maintaining a horizontal position, and a second series of dies cooperating with those first named, and mounting means for the dies of the second series comprising a series of converging guiding elements, the Working faces of the dies having converging edge portions.

11. lln a device of the class described, a plurality of series of dies, means for mounting the dies, of one series and causing` them tol move toward and from the dies of the otherseries, all of the dies being movable radially with vreference to the axis of the mounting means, the dies maintaining a hori- Zontal position, the Working faces. of the dies having converging edge portions.

12. ln a device of the class described, a series of dies having longitudinally tapering Werl; engaging faces extending radially from a con Limon center, a support therefor including means for permitting motion of said. dies parallel to themselves toward and from the common center, a movable head, and dies on said head for cooperation with said rst named dies, the diesmaintaining a borimroq tal position.

13.` ln a device of the class described, a plurality of series of dies each having longitudinally taperingworl; engaging faces, the

:aerienne dies of each series converging toward a common. center and mounted to move toward said center during their working stroke, the dios maintaining a horizontal position.

14. In a device of the class described, a,y

plurality of series of dies each having longitudinally tapering Work engaging faces, the dies of each series converging toward a common center and mounted to move toward said center during their Working stroke, the dies maintaining a horizontal position, the mounting means for the dies permitting movement of the dies of each series from the center when disengaged from the Work.

15. ln a device of the class described, a series of dies, mounting means therefor, the dies being movable toward a common center, the dies maintaining a horizontal position and the mounting` means being inclined With reference to the Working faces of thel dies, and dies cooperating with those first named, the Working faces of the dies havingl converging edge portions.

16. ln a device of the class described, a series of dies spaced apart When in inoperative position, and movable during operation toward a common center, the dies maintaining horizontal position, mounting means' for the dies, the mounting means including members inclined with reference to the Working faces of the dies, and a second series of dies cooperating With those first named, the working faces of the dies having converging edge portions.y

17. a device of the cless described, a se ies of dies, mounting means therefor, the dies being movable toward a common center, While maintaining a horizontal position, and the mounting means being inclined With reference to the Working faces of the dies, and

dies cooperating with those first named, the cooperating dies alternating With the dies first named so that the edges of their Working faces will assume a position substantially parallel Withthe edges of the Working faces of the dies first named. c

18. ln a device of the class described.l a series of dies, mounting means therefor, the dies being `movable toward a common center while maintaining a 4horizontal position and 1 the mounting means being inclined with ref erence to the Working faces of the dies, and n dies cooperating with those first named, each of the dies including1 elements promoting bel. l. l)

yond the maj or portion of the Working faces,

the projecting elements of the lower dies in! terloclnng With those of the upper dies.

ln testimony whereof l affix my signature.

vvrniimu A.. vmson. 

